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Registered Member #1321
Joined: Sat Feb 16 2008, 03:22AM
Location:
Posts: 843
When I used to work in an engineering lab, we would generally try to buy whatever we needed...whenever we were tasked with doing something, we also got a budget to go along with it.
I know some people here are suggesting to build everything, but that's not always practical or cost effective, especially in a commercial/industrial setting. If you're paying someone $35 per hour, by the time he gets something rigged up and gets the bugs out of it, and gets it working safely and reliably, you could've gone out and bought a used or even a new Glassman HV power supply, for example.
And then if/when you don't need the equipment anymore, you can sell it and probably get more than half your money back.
We usually built our own stuff only when we couldn't buy exactly what we wanted.
If you only need 100 watts or so, I would go with something like this Glassman "FC Series":
I'm not sure exactly what they cost brand new, but I think it's somewhere around $2000. You could probably find used power supplies for $1200 to $1500 or something like that.
Then you could get a commercial HV DC probe (e.g., Fluke) for maybe $150 to $200.
Registered Member #2919
Joined: Fri Jun 11 2010, 06:30PM
Location: Cambridge, MA
Posts: 652
John R wrote ...
I'm trying to make a setup in my research lab that produces corona discharge. I've thought up some parts I will need, and I was wondering if any of you might be able to recommend good vendors to me for some of the parts.
High voltage power supply - 30 kV, about 50-100 W power High voltage voltmeter Microammeter
Thanks!
Now, if its _your_ research lab and you're not paying yourself for the extra work, a build may be fine. But otherwise, a small Glassman will probably do, especially if you get it off Ebay.
Registered Member #1064
Joined: Tue Oct 16 2007, 05:04PM
Location:
Posts: 42
AC corona is much easier to work with than DC corona. (My opinion) Get a high voltage 60 hertz transformer, a variable transformer and a high wattage light bulb. Put the light bulb in series with the output of the variable transformer and the input of the high voltage transformer. Build a corona detector per MIL T27. You should be able to get a copy of MIL T27 from the Corona detector will work with both AC and DC. If you cannot get copy of MIL T27, let me know and will Email the pages for the corona detector. We used MIL T27 corona detector in industrial setting for 17 years and it is great. Some years ago purchased corona detector and it was junk. If you purchase corona detector, be careful what you purchase. Also should probably have some additional protection between the corona detector and the oscilloscope. Tube type oscilloscopes were OK. Solid state oscilloscopes failed sometimes.
At "Coil Winding '81" (1981) presented paper "Design and Operation of a Corona Detector". If you can get me your Email address, will send you a copy of the paper.
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corona discharge - vendor recommendations
